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The total surface area of a hollow right...

The total surface area of a hollow right circular cylinder `= 2 pi (Rh + rh + R^(2) - r^(2))` sq-units, where R = outer radius, r = inner radius and h = height of the cylinder. TRUE or FALSE

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The volume of a right circular cylinder is 2 pi r h sq- units, where r = radius of the base and h = height of the cylinder.

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Knowledge Check

  • If the total surface area of a right circular cone of radius 3cm be 24 pi sq-cm, then its volume will be .

    A
    `25 pi c c `
    B
    `30 pi c c`
    C
    `32 pi c c`
    D
    `36 pi c c`

  • The radius of a right circular cylinder is r unit and height is 2r units . The diameter of the largest sphere that can be put into the cylinder will be

    A
    r unit
    B
    2r unit
    C
    `r/2 ` unit
    D
    4r unit

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    If the lateral surface area of a right circular cylindrical pillar is 264 sq-metres and volume is 924 cubic-metres. Find the length of radius of the base of the cylinder.

    If the external and internal radii of a hollow right circular cylinder be R unit and r unit respectively and height is h unit then the volume of the cylinder is

    The numarical values of volume and total surface area of a solid right circular cylinder are same. If h and r are the height and radius of the cylinder respectively then the value of h+r/hr is

    If the lateral surface area of a right circular cylinder is c. square unit, length of radius of base is r unit and volume is V cubic-unit. Find the value of cr/V .

    The base radius of a right circular cylinder and a cone are equal and the ratio of their volume is 3:2. Prove that the height of the cone is twice the height of the cylinder.

    The curved surface area of a right circular cone of height h unit and radius of base r unit is pi rsqrt(h^2+r^2) unit .

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